X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fpcl%2Flow.lisp;h=9de576360eac270de4bd1886243cc1bc33c0523f;hb=a339d8610329763e596d0dcbadbb3aee8dd10afb;hp=bb0b613f20fbc6dc16bc7241f2c6a968b9189535;hpb=29003bacae52b0b32626b30e67d6f82a9f4dbce7;p=sbcl.git

diff --git a/src/pcl/low.lisp b/src/pcl/low.lisp
index bb0b613..9de5763 100644
--- a/src/pcl/low.lisp
+++ b/src/pcl/low.lisp
@@ -46,6 +46,27 @@
   `(dotimes (,var (the fixnum ,count) ,result)
      (declare (fixnum ,var))
      ,@body))
+
+(declaim (inline random-fixnum))
+(defun random-fixnum ()
+  (random (1+ most-positive-fixnum)))
+
+(defconstant n-fixnum-bits #.(integer-length most-positive-fixnum))
+
+;;; Lambda which executes its body (or not) randomly. Used to drop
+;;; random cache entries.
+(defmacro randomly-punting-lambda (lambda-list &body body)
+  (with-unique-names (drops drop-pos)
+    `(let ((,drops (random-fixnum))
+           (,drop-pos n-fixnum-bits))
+       (declare (fixnum ,drops)
+                (type (integer 0 #.n-fixnum-bits) ,drop-pos))
+       (lambda ,lambda-list
+         (when (logbitp (the unsigned-byte (decf ,drop-pos)) ,drops)
+           (locally ,@body))
+         (when (zerop ,drop-pos)
+           (setf ,drops (random-fixnum)
+                 ,drop-pos n-fixnum-bits))))))
 
 ;;;; early definition of WRAPPER
 ;;;;
@@ -102,11 +123,14 @@
   (declare (type function new-value))
   (aver (funcallable-instance-p fin))
   (setf (funcallable-instance-fun fin) new-value))
+
 ;;; FIXME: these macros should just go away.  It's not clear whether
 ;;; the inline functions defined by
 ;;; !DEFSTRUCT-WITH-ALTERNATE-METACLASS are as efficient as they could
 ;;; be; ordinary defstruct accessors are defined as source transforms.
-(defmacro fsc-instance-p (fin)
+(defun fsc-instance-p (fin)
+  (funcallable-instance-p fin))
+(define-compiler-macro fsc-instance-p (fin)
   `(funcallable-instance-p ,fin))
 (defmacro fsc-instance-wrapper (fin)
   `(%funcallable-instance-layout ,fin))
@@ -128,7 +152,9 @@
 ;;; and normal instances, so we can return true on structures also. A
 ;;; few uses of (OR STD-INSTANCE-P FSC-INSTANCE-P) are changed to
 ;;; PCL-INSTANCE-P.
-(defmacro std-instance-p (x)
+(defun std-instance-p (x)
+  (%instancep x))
+(define-compiler-macro std-instance-p (x)
   `(%instancep ,x))
 
 ;; a temporary definition used for debugging the bootstrap
@@ -176,7 +202,6 @@
 (defun set-fun-name (fun new-name)
   #+sb-doc
   "Set the name of a compiled function object. Return the function."
-  (declare (special *boot-state* *the-class-standard-generic-function*))
   (when (valid-function-name-p fun)
     (setq fun (fdefinition fun)))
   (typecase fun
@@ -185,7 +210,7 @@
     (sb-eval:interpreted-function
      (setf (sb-eval:interpreted-function-name fun) new-name))
     (funcallable-instance ;; KLUDGE: probably a generic function...
-     (cond ((if (eq *boot-state* 'complete)
+     (cond ((if (eq **boot-state** 'complete)
                 (typep fun 'generic-function)
                 (eq (class-of fun) *the-class-standard-generic-function*))
             (setf (%funcallable-instance-info fun 2) new-name))